Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 40, NWS Grand Forks, ND

June 22, 1997Richland County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 22, 1997, 10:12 PM CDT for Richland County, North Dakota. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 22, 1997, 10:12 PM CDT (03:12 UTC)
Expired: Jun 22, 1997, 10:45 PM CDT
In force: 33 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Richland County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 03:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 22, 10:25 PM CDT	Hail 1.75	Fairmount, ND

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 3.2 hours before the alert went out and 189 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1720 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 320 m²/s²
0-3 km storm-relative helicity: 538 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 33.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

445 
WUUS1 KFAR 230314 RRA
SVRFAR
NDC077-230345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1012 PM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST NORTH DAKOTA
 
   ...SOUTHERN RICHLAND COUNTY
 
AT 1010 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED 4
MILES SOUTH OF HANKINSON...OR 30 MILES SOUTHWEST OF RICHLAND...MOVING
EAST AT 20 MPH. WILLARD LAKE AND GRASS LAKE ARE IN THE PATH OF THIS
STORM.  THIS STORM HAS A HISTORY OF PRODUCING GOLFBALL SIZE HAIL.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
NG

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 9:01 PM CDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jun 22, 9:01 PM CDT, 1 hour 11 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
900 PM CDT SUN JUN 22 1997

FIRST PERIOD DISCUSSION...STRMS CONT TO OCCUR ALNG A THETA E GRAD
IN ERN ND. GRAD FCST TO MOV SLOLY NE AND E OVRNT. ADAP HAS
QUITE STRNG MOIST CNVG ALNG THE WRN N AND S DAK BRDR. APPARENTLY
CNVG AND UPSLOPE STRNG ENUF WITH STRMS FIRING IN THE HI PLNS.
THINK THESE STRMS COULD REACH CWA LATER TNGT. SNDGS QUITE UNSTABLE
TO THE S BUT MOST HAVE EITHER A CAP OR A FAIRLY HIGH NEG AREA XCPT
FOR UNR.  SFC DWPTS GENERALLY IN THE 60S...SO A HUMID NIGHT FCST.
WL CHECK OVR ZONES BUT WILL LIKELY LEAVE AS IS.

HOPPES

In the hours before

Local storm report, Jun 22, 7:25 PM CDT, 2 hours 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND                              724 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....
                                                                                0720 PM    3-1/2 E OF VALLEY CITY    ND   3/4 INCH HAIL
07/22/97   BARNES

Local storm report, Jun 22, 7:26 PM CDT, 2 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR MONTH OF EVENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
726 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0720 PM    3-1/2 E OF VALLEY CITY    ND   3/4 INCH HAIL
06/22/97   BARNES

Local storm report, Jun 22, 7:27 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR MONTH OF EVENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
726 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0720 PM    3-1/2 E OF VALLEY CITY    ND   3/4 INCH HAIL
06/22/97   BARNES

Local storm report, Jun 22, 9:55 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
955 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

950 PM    1 SSW LIDGERWOOD          ND   GOLFBALL SIZE HAIL
06/22/97   RICHLAND

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 22, 7:05 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	25 min
Jun 22, 7:31 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	29 min
Jun 22, 8:02 PM CDT	Severe Thunderstorm Warning	FGF	Cass	28 min
Jun 22, 8:26 PM CDT	Severe Thunderstorm Warning	FGF	Steele, Traill	34 min
Jun 22, 8:33 PM CDT	Severe Thunderstorm Warning	FGF	Cass	27 min
Jun 22, 9:49 PM CDT	Severe Thunderstorm Warning	FGF	Richland	26 min
Jun 22, 11:59 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey	31 min
Jun 23, 12:56 AM CDT	Severe Thunderstorm Warning	FGF	Cass	34 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.